CN205542389U - Magnetic ring power transformer - Google Patents
Magnetic ring power transformer Download PDFInfo
- Publication number
- CN205542389U CN205542389U CN201620327954.8U CN201620327954U CN205542389U CN 205542389 U CN205542389 U CN 205542389U CN 201620327954 U CN201620327954 U CN 201620327954U CN 205542389 U CN205542389 U CN 205542389U
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- sheath
- magnet ring
- base
- magnetic ring
- mains transformer
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Abstract
The utility model relates to a magnetic ring transformer, it includes the base and sets up the magnetic ring on base upper portion, winding primary and secondary coil on the magnetic ring, many stitchs of bottom interval installation of base, the periphery cladding of magnetic ring has a first sheath, and primary and secondary coil's lead wire is taken a percentage and is drawn forth and buckle and be connected with the stitch that corresponds is electric behind the side of the surface of walking around first sheath downwards in proper order and base from the upper portion of magnetic ring, the outside cover of first sheath is equipped with just, secondary coil's lead wire is taken a percentage and the equal cladding in border of base including the second sheath. The utility model has the advantages of simple structure, realization make things convenient for, insulating properties is good and safe distance is big.
Description
Technical field
This utility model relates to a kind of magnet ring mains transformer.
Background technology
Small-sized or Mini-magnetic ring mains transformer mainly includes magnet ring and base, wherein, being wound around some primary and secondary coils on magnet ring, the bottom interval of base is installed after the side of base is walked around in the lead-in wire tap of many stitch, primary coil and secondary coil and is welded with corresponding stitch respectively.
Existing small-sized or Mini-magnetic ring mains transformer usually face when specific design manufactures size (including overall dimensions and installation dimension) less in the case of, meet the contradiction of safe distance again, the bad problem punctured of high pressure proof voltage often occur in using.Analysis occurs that the reason of this problem is that during high-temperature soldering, the insulating barrier of winding wire damages caused due to the reserved deficiency of safe distance.
As a example by TEX-E three layer insulation wire, its insulating barrier is 260-280 DEG C by the fusing point of film resin, for the part produced in enormous quantities, the technique of the general molten tin bath immersed solder using 420 DEG C, due to metal core wire (conventional copper, aluminum) heat conduction in winding wire, necessarily causing the non-linear damage of winding wire insulating barrier near solder joint to coil, its insulating properties reduce.In order to ensure insulating properties, general employing supports the use the base used specially of TEX-E three layer insulation wire, two distances need to be met: when surface-discharge distance (Ls) and immersed solder, winding wire insulation tunicle fusing destroys length (Lm), i.e. Ls+Lm is safe distance during design specialized base.
In order to meet the requirement of safe distance, mains transformer size (length) can increase accordingly, and the mains transformer after size increases cannot be installed to again on the pcb board shaped.Even if new Design PCB plate, mains transformer size also will not be used too greatly.So, existing way, carry out the protecting high temperature welding non-linear damage to winding line insulating layer only with the dielectric thickness and temperature resistant grade strengthening winding wire further, thus substitute Lm distance.But can not fundamentally ensure safe distance, make welding difficulty increase simultaneously or technique becomes more complicated.
By strengthening thickness and the way of temperature resistant grade of winding wire dielectric, although analyzing the requirement that disclosure satisfy that safe distance theoretically, but in concrete production process, the molten tin bath immersed solder and the pcb board 240 DEG C that must travel 420 DEG C weld this twice welding, during the molten tin bath immersed solder of particularly 420 DEG C, concentration etc. on time, the degree of depth of terminal immersion soldering tin and the scaling powder of immersed solder affects the key element setting of welding quality, the most difficult assurance.In theory, immersed solder time lengthening, welding quality is the best, but, owing to the high temperature destruction to insulating is nonlinear, it is the biggest that the immersed solder time increases the length necessarily causing winding wire dielectric film to damage, and causes Ls+Lm safe distance the shortest, in winding wire, the conductive force of metal core wire also can be damaged the insulating barrier of adjacent winding wire further and even destroy magnet ring coating, thus causes pressure bad between winding interlayer, primary and secondary winding or between winding and magnet ring and puncture.
Due to electronic product small and miniaturization, power panel (pcb board) is left for the installing space the most increasingly flattening of mains transformer and narrow and small, while thus making small-sized or Mini-magnetic ring mains transformer profile installation dimension meet installing space, it is difficulty with pressure surface creep age distance and electric clearance that various countries' GB safety requires.Such as: GB19212.1-2003, GB19212.7-2006 require that creep age distance and electrical equipment gap width are 4.4 millimeters and 4.17 millimeters respectively, high pressure proof voltage (GB19212.1-2003 often occurs, GB19212.7-2006 required value: during primary 220V input, between primary and secondary, primary to dielectric strength 3453V between magnetic core) the bad problem punctured.Additionally, from Such analysis, even if stop the required value of above-mentioned GB when design, but in the small-sized or concrete production process of Mini-magnetic ring mains transformer, when especially carrying out molten tin bath immersed solder and the power panel 240 DEG C welding of 420 DEG C, the dielectric on winding wire or magnet ring still has greatly may suffer nonlinear damage.Therefore, in concrete production, very strict with requirement to welding technological standards, especially weld interval and working specification to 420 DEG C of melted immersed solder requires the harshest, while it is true, still there will be a large amount of bad product in concrete production.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in construction, realizes the magnet ring mains transformer that convenience, good insulation preformance and safe distance are big.
For solving above-mentioned technical problem, magnet ring mains transformer of the present utility model includes base and is arranged on the magnet ring on base top, primary coil and secondary coil it is wound around on magnet ring, the bottom interval of base installs many stitch, its be structurally characterized in that the periphery of described magnet ring be coated with the lead-in wire tap of the first sheath, primary coil and secondary coil from the top of magnet ring draws and bend downward walk around the outer surface of the first sheath and the side of base successively after electrically connect with corresponding stitch.
Use said structure, by arranging the first sheath, it is equal to Lm safe distance is greatly improved, the heat isolation of copper core in lead-in wire tap when making to weld, it is impossible to be delivered to coil windings, serve good heat-blocking action, the increase of Lm, significantly reduce the technology difficulty of immersed solder so that this crucial important procedure, become ease of Use operation；Meanwhile, outside lead-in wire tap is individually isolated in coil windings by the first sheath, also increase the length of surface-discharge distance Ls.Visible, the first sheath has the heat insulation and function of insulation concurrently, is added significantly to Ls+Lm safe distance.Thoroughly solveSmall-sized or not only required that size was little, but also requirement time Mini-magnetic ring mains transformer manufactures and designsThe contradiction that Ls+Lm is sufficiently large, improvesSmall-sized or Mini-magnetic ring power supplyThe security performance of transformator.
The outer cover of described first sheath is provided with and the lead-in wire tap of primary and secondary coil and the border of base is all coated on the second interior sheath.Second sheath is used for being coated with whole transformator, improves whole transformator and the insulating properties of other element on pcb board, further increases safety.
Described first sheath and the second sheath are heat-shrink tube.Two sheaths all can use heat-shrink tube, utilizes the advantage that shrinkable tube structure is simple and easy to operate.
The length of described first sheath is more than the axial length of magnet ring, and the top of the first sheath and bottom are respectively turned inwards and form the first sheath annular turnover edge covered in magnet ring top edge and bottom edge.
The length of described second sheath is more than ring axial magnetic length and base thickness sum, and the top of the second sheath and bottom are respectively turned inwards and form the second sheath annular turnover edge covered in magnet ring top edge and base end face edge.
In said structure, the top of two sheaths and bottom are respectively provided with annular turnover edge, can increase interstructural insulation and heat-proof quality further so that the protective effect of sheath is further expanded.
The side opening of described base is provided with multiple through base top surface and bottom surface and for accommodating the wire casing of lead-in wire tap.Owing to the side of base is all walked around in each lead-in wire tap, in order to avoid interfering between adjacent taps, therefore wire casing is set.Wire casing plays spacing effect, each wire casing accommodates the tap of a lead-in wire, it is to avoid the position skew of lead-in wire tap and mutual interference.
In sum, this utility model has simple in construction, realizes convenient, good insulation preformance and the advantage that can be effectively increased safe distance.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the A portion structure for amplifying schematic diagram in Fig. 1；
Fig. 3 is the structural representation of this utility model middle magnetic ring；
Fig. 4 is the structural representation of base in this utility model.
Detailed description of the invention
Referring to the drawings, magnet ring mains transformer of the present utility model includes base and is arranged on the magnet ring 1 on base top, primary coil and secondary coil it is wound around on magnet ring 1, the bottom interval of base 2 installs many stitch 3, the periphery of magnet ring 1 be coated with the lead-in wire tap 5 of the first sheath 4, primary coil and secondary coil from the top of magnet ring 1 draws and bends downward walk around the outer surface of the first sheath 4 and the side of base 2 successively after electrically connect with corresponding stitch 3.Wherein, the side opening of base 2 is provided with multiple through base top surface and bottom surface and for accommodating the wire casing 7 of lead-in wire tap 5.Owing to the side of base 2 is all walked around in each lead-in wire tap 5, in order to avoid interfering between adjacent taps, therefore wire casing 7 is set.Wire casing 7 plays spacing effect, and each wire casing 7 accommodates the tap 5 of a lead-in wire, it is to avoid the position skew of lead-in wire tap and mutual interference.
In said structure, by arranging the first sheath 4 so that in the tap 5 that goes between during welding, the heat of copper core cannot be delivered to coil windings, serves good heat-blocking action, reduces the technology difficulty of immersed solder；Meanwhile, outside lead-in wire tap 5 is individually isolated in coil windings by the first sheath 4, adds the length of the lead-in wire tap insulating barrier allowing damage, i.e. add safe distance.Visible, the first sheath 4 has the heat insulation and function of insulation, the pressure bad problem punctured of coil thoroughly solved concurrently, improves the security performance of transformator.
Referring to the drawings, the outer cover of the first sheath 4 is provided with and the lead-in wire tap 5 of primary and secondary coil and the border of base 2 is all coated on the second interior sheath 6.Second sheath 6 is used for being coated with whole transformator, improves whole transformator and the insulating properties of other element on pcb board, uses the structure of duplex sheath, and progressive one improves the security performance of transformator.Wherein, the first sheath 4 and the second sheath 6 are heat-shrink tube, make use of the advantage that shrinkable tube structure is simple and easy to operate.
Referring to the drawings, the length of the first sheath 4 is more than the axial length of magnet ring 1, and the top of the first sheath 4 and bottom are respectively turned inwards and form the covering the first sheath annular turnover in magnet ring 1 top edge and bottom edge along 41.The length of the second sheath 6 is more than magnet ring 1 axial length and base 2 thickness sum, and the top of the second sheath 6 and bottom are respectively turned inwards and form the covering the second sheath annular turnover in magnet ring 1 top edge and base 2 bottom edge along 61.Annular turnover is set along increasing interstructural insulation and heat-proof quality further so that the protective effect of sheath is further expanded.
In sum, this utility model is not limited to above-mentioned detailed description of the invention.Those skilled in the art, on the premise of without departing from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (6)
1. a magnet ring mains transformer, including base and the magnet ring (1) being arranged on base top, magnet ring (1) is upper is wound around primary coil and secondary coil, the bottom interval of base (2) installs many stitch (3), it is characterized in that the periphery of described magnet ring (1) is coated with the first sheath (4), the lead-in wire tap (5) of primary coil and secondary coil is drawn from the top of magnet ring (1) and is bent after walking around downwards the outer surface of the first sheath (4) and the side of base (2) successively and electrically connects with corresponding stitch (3).
2. magnet ring mains transformer as claimed in claim 1, is characterized in that the outer cover of described first sheath (4) is provided with and the lead-in wire tap (5) of primary and secondary coil and the border of base (2) is all coated on interior the second sheath (6).
3. magnet ring mains transformer as claimed in claim 1, is characterized in that described first sheath (4) and the second sheath (6) are heat-shrink tube.
4. magnet ring mains transformer as claimed in claim 1, it is characterized in that the length axial length more than magnet ring (1) of described first sheath (4), the top of the first sheath (4) and bottom are respectively turned inwards and form the first sheath annular turnover edge (41) covered in magnet ring (1) top edge and bottom edge.
5. magnet ring mains transformer as claimed in claim 2, it is characterized in that the length of described second sheath (6) is more than magnet ring (1) axial length and base (2) thickness sum, the top of the second sheath (6) and bottom are respectively turned inwards and form the second sheath annular turnover edge (61) covered in magnet ring (1) top edge and base (2) bottom edge.
6. the magnet ring mains transformer as according to any one of claim 1-5, is characterized in that the side opening of described base (2) is provided with multiple through base top surface and bottom surface and for accommodating the wire casing (7) of lead-in wire tap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620327954.8U CN205542389U (en) | 2016-04-19 | 2016-04-19 | Magnetic ring power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620327954.8U CN205542389U (en) | 2016-04-19 | 2016-04-19 | Magnetic ring power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542389U true CN205542389U (en) | 2016-08-31 |
Family
ID=56793729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620327954.8U Withdrawn - After Issue CN205542389U (en) | 2016-04-19 | 2016-04-19 | Magnetic ring power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542389U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655122A (en) * | 2016-04-19 | 2016-06-08 | 青州市宝利电子有限公司 | Manufacturing method capable of increasing safe distance of magnet ring power transformer and magnet ring power transformer |
| CN106847481A (en) * | 2017-01-12 | 2017-06-13 | 惠州格利尔科技有限公司 | A kind of pin fixed plate of micro loop transformer and the preparation method of transformer |
-
2016
- 2016-04-19 CN CN201620327954.8U patent/CN205542389U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655122A (en) * | 2016-04-19 | 2016-06-08 | 青州市宝利电子有限公司 | Manufacturing method capable of increasing safe distance of magnet ring power transformer and magnet ring power transformer |
| CN105655122B (en) * | 2016-04-19 | 2017-06-16 | 青州市宝利电子有限公司 | A kind of magnet ring power transformer manufacture method and magnet ring power transformer for lifting safe distance |
| CN106847481A (en) * | 2017-01-12 | 2017-06-13 | 惠州格利尔科技有限公司 | A kind of pin fixed plate of micro loop transformer and the preparation method of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20170616 |